-- V1__Initial_Schema.sql
-- Create quantengine schema and core tables

CREATE SCHEMA IF NOT EXISTS quantengine;

-- KIS API Token Cache
CREATE TABLE IF NOT EXISTS quantengine.kis_tokens (
    account TEXT PRIMARY KEY,
    access_token TEXT NOT NULL,
    expires_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
);

-- User Account Management
CREATE TABLE IF NOT EXISTS quantengine.workspace_account (
    ordinal INT NOT NULL,
    username TEXT PRIMARY KEY,
    password_hash TEXT NOT NULL,
    role TEXT NOT NULL DEFAULT 'Admin',
    is_active TEXT NOT NULL DEFAULT 'true',
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
);

CREATE INDEX IF NOT EXISTS idx_workspace_account_active ON quantengine.workspace_account(is_active, username);

-- Session Management
CREATE TABLE IF NOT EXISTS quantengine.workspace_session (
    session_token_hash TEXT PRIMARY KEY,
    username TEXT NOT NULL,
    role TEXT NOT NULL DEFAULT 'Admin',
    created_at TEXT NOT NULL,
    expires_at TEXT NOT NULL,
    revoked_at TEXT
);

CREATE INDEX IF NOT EXISTS idx_workspace_session_username ON quantengine.workspace_session(username, expires_at DESC);

-- Collection Runs
CREATE TABLE IF NOT EXISTS quantengine.collection_runs (
    run_id TEXT PRIMARY KEY,
    collector_name TEXT NOT NULL,
    started_at TEXT NOT NULL,
    finished_at TEXT,
    status TEXT NOT NULL,
    input_source TEXT,
    output_json_path TEXT,
    output_db_path TEXT,
    notes TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Collection Snapshots
CREATE TABLE IF NOT EXISTS quantengine.collection_snapshots (
    run_id TEXT NOT NULL,
    dataset_name TEXT NOT NULL,
    ticker TEXT NOT NULL,
    name TEXT,
    sector TEXT,
    as_of_date TEXT,
    source_priority TEXT,
    source_status TEXT,
    payload_json TEXT NOT NULL,
    provenance_json TEXT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (run_id, dataset_name, ticker)
);

CREATE INDEX IF NOT EXISTS idx_collection_snapshots_ticker_time ON quantengine.collection_snapshots(ticker, created_at DESC);

-- Collection Source Errors
CREATE TABLE IF NOT EXISTS quantengine.collection_source_errors (
    run_id TEXT NOT NULL,
    ticker TEXT,
    source_name TEXT NOT NULL,
    error_kind TEXT NOT NULL,
    error_message TEXT NOT NULL,
    payload_json TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX IF NOT EXISTS idx_collection_source_errors_run ON quantengine.collection_source_errors(run_id, source_name);

-- Settings
CREATE TABLE IF NOT EXISTS quantengine.settings (
    ordinal INT NOT NULL,
    key TEXT PRIMARY KEY,
    value_json TEXT NOT NULL,
    note TEXT NOT NULL DEFAULT '',
    updated_at TEXT NOT NULL
);

-- Account Snapshots
CREATE TABLE IF NOT EXISTS quantengine.account_snapshot (
    ordinal INT NOT NULL,
    row_json TEXT NOT NULL,
    captured_at TEXT NOT NULL DEFAULT '',
    account TEXT NOT NULL DEFAULT '',
    account_type TEXT NOT NULL DEFAULT '',
    ticker TEXT NOT NULL DEFAULT '',
    name TEXT NOT NULL DEFAULT '',
    parse_status TEXT NOT NULL DEFAULT '',
    user_confirmed TEXT NOT NULL DEFAULT '',
    updated_at TEXT NOT NULL
);

CREATE INDEX IF NOT EXISTS idx_account_snapshot_captured_at ON quantengine.account_snapshot(captured_at);
CREATE INDEX IF NOT EXISTS idx_account_snapshot_ticker ON quantengine.account_snapshot(ticker);

-- Workspace Metadata
CREATE TABLE IF NOT EXISTS quantengine.workspace_meta (
    key TEXT PRIMARY KEY,
    value_json TEXT NOT NULL
);

-- Workspace Change Log
CREATE TABLE IF NOT EXISTS quantengine.workspace_change_log (
    id SERIAL PRIMARY KEY,
    domain TEXT NOT NULL,
    action TEXT NOT NULL,
    target_ref TEXT NOT NULL DEFAULT '',
    actor TEXT NOT NULL DEFAULT 'system',
    note TEXT NOT NULL DEFAULT '',
    before_json TEXT NOT NULL DEFAULT 'null',
    after_json TEXT NOT NULL DEFAULT 'null',
    created_at TEXT NOT NULL
);

-- Workspace Approval
CREATE TABLE IF NOT EXISTS quantengine.workspace_approval_v2 (
    domain TEXT NOT NULL,
    target_ref TEXT NOT NULL DEFAULT '*',
    status TEXT NOT NULL,
    approved_by TEXT NOT NULL DEFAULT '',
    approved_at TEXT NOT NULL DEFAULT '',
    note TEXT NOT NULL DEFAULT '',
    updated_at TEXT NOT NULL,
    PRIMARY KEY (domain, target_ref)
);

-- Workspace Lock
CREATE TABLE IF NOT EXISTS quantengine.workspace_lock (
    domain TEXT NOT NULL,
    target_ref TEXT NOT NULL DEFAULT '',
    locked_by TEXT NOT NULL DEFAULT '',
    reason TEXT NOT NULL DEFAULT '',
    locked_at TEXT NOT NULL,
    PRIMARY KEY (domain, target_ref)
);